Home / 80,375,689.16-120,411,408.42-47,487,906.35

Finding the Fourth Proportional to 80,375,689.16, 120,411,408.42 and 47,487,906.35

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Solution

The fourth proportional to 80,375,689.16, 120,411,408.42 and 47,487,906.35 is: 71,141,980.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,375,689.16 : 120,411,408.42 = 47,487,906.35 : x
  2. Step 2: Convert to fraction form
    80,375,689.16/120,411,408.42 = 47,487,906.35/x
  3. Step 3: Cross multiply
    80,375,689.16x = 120,411,408.42 × 47,487,906.35
  4. Step 4: Simplify right side
    80,375,689.16x = 5,718,085,685,918,504
  5. Step 5: Solve for x
    x = 5,718,085,685,918,504/80,375,689.16
  6. Step 6: Final answer
    x = 71,141,980.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.